EP 0985952 A1 20000315 - IMAGE DISPLAY AND LIGHT-EMITTING DEVICE
Title (en)
IMAGE DISPLAY AND LIGHT-EMITTING DEVICE
Title (de)
BILDANZEIGE UND LICHTEMITTIERENDE VORRICHTUNG
Title (fr)
AFFICHEUR D'IMAGES ET DISPOSITIF EMETTANT DE LA LUMIERE
Publication
Application
Priority
- JP 9901439 W 19990323
- JP 7879998 A 19980326
Abstract (en)
A liquid crystal projector is composed of a luminous device 50, a parallel-conversion optical system 60, an optical switch 70, and a display optical system 80, in order to obtain a simple optical system and a high light-utilization rate of the liquid crystal projector. The luminous device 50 applies LD arrays 51, 52 and 53 composed of semiconductor lasers 54 arrayed lengthwise and crosswise. Output beams from the semiconductor lasers 54 are converted into parallel beams through lens arrays 61, 62 and 63. Since the output beams from the semiconductor lasers 54 are linearly polarized beams of wave P or wave S, the polarization conversion optical system is unnecessary. By optionally combining the semiconductor lasers 54, it is possible to make the shape of the LD array 51, 52 or 53 be the same as the light-utilization shape of red-transmission type liquid crystal panel 71, green-transmission type liquid crystal panel 72, or blue-transmission type liquid crystal panel 73. <IMAGE>
IPC 1-7
IPC 8 full level
G02B 3/00 (2006.01); G02B 27/14 (2006.01); G02F 1/1335 (2006.01); G02F 1/13357 (2006.01); H01S 3/00 (2006.01); H01S 5/00 (2006.01); H04N 9/31 (2006.01); H01S 5/40 (2006.01)
CPC (source: EP)
G02B 3/0056 (2013.01); G02B 3/0062 (2013.01); G02B 3/04 (2013.01); G02B 19/0028 (2013.01); G02B 19/0057 (2013.01); G02B 19/009 (2013.01); G02B 27/0927 (2013.01); G02B 27/0961 (2013.01); G02B 27/123 (2013.01); G02B 27/145 (2013.01); G02B 27/149 (2013.01); G02F 1/133526 (2013.01); G02F 1/13362 (2013.01); H01S 3/005 (2013.01); H01S 5/00 (2013.01); H04N 9/3105 (2013.01); H04N 9/3152 (2013.01); H01S 5/4025 (2013.01)
Designated contracting state (EPC)
DE FR GB
DOCDB simple family (publication)
EP 0985952 A1 20000315; EP 0985952 A4 20040714; WO 9949358 A1 19990930
DOCDB simple family (application)
EP 99909298 A 19990323; JP 9901439 W 19990323